CN110611376B - Component for a linear actuator - Google Patents

Component for a linear actuator Download PDF

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Publication number
CN110611376B
CN110611376B CN201910515310.XA CN201910515310A CN110611376B CN 110611376 B CN110611376 B CN 110611376B CN 201910515310 A CN201910515310 A CN 201910515310A CN 110611376 B CN110611376 B CN 110611376B
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CN
China
Prior art keywords
linear actuator
component
unit
designed
tubular member
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Application number
CN201910515310.XA
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Chinese (zh)
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CN110611376A (en
Inventor
本杰明·埃吉曼
鲁道夫·坎贝尔
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Yiweilai Co ltd
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Yiweilai Co ltd
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Publication of CN110611376A publication Critical patent/CN110611376A/en
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G01L5/0033—Force sensors associated with force applying means applying a pulling force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G01L5/0038—Force sensors associated with force applying means applying a pushing force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Medical Informatics (AREA)
  • Artificial Intelligence (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention relates to a component for a linear actuator having at least one component (32), in particular a spindle unit, which is designed to transmit data by means of electromagnetic radiation and/or to receive energy wirelessly and to subsequently supply at least one electrical load (34) with the wirelessly received energy on an electrical path.

Description

Component for a linear actuator
A linear actuator is known from document WO2017048788A1, which has a tubular element and a part, which part can extend from the tubular element. The linear actuator has a sensor that measures the force of the component. Other prior art is known from documents DE102010050837A1, JP2005201390A, EP1595681A1, US20060113940A1 and US20080065354 A1.
The invention is particularly aimed at achieving a long service life.
The invention relates to a component for a linear actuator, in particular a spindle unit, which is designed to transmit data by means of electromagnetic radiation and/or to receive energy wirelessly and to subsequently supply at least one electrical load with the wirelessly received energy on an electrical path. In terms of "wireless" energy reception, it is to be understood as energy reception of a type which differs from energy reception which is achieved by means of electric current alone (i.e. electric current flows from the unit giving energy through a conductor made of solid to the unit receiving energy). According to the invention, a long service life is achieved. In particular, wear of the cable can be avoided.
Other advantages will be apparent from the following description of the drawings. Embodiments of the invention are illustrated in the accompanying drawings. The drawings, description and claims contain technical features of various combinations. Those skilled in the art can also readily take these technical features into account individually and combine them into other combinations that are technically significant.
Fig. 1 shows a partially cut-away perspective view of a linear actuator according to the invention;
FIG. 2 shows a cross-sectional view of a linear actuator;
FIG. 3 shows the components of a linear actuator and a threaded shaft;
FIG. 4 shows a perspective view of a cross section of a component along with a threaded shaft; and
fig. 5 shows a longitudinal section through a linear actuator.
Fig. 1 shows a partially cut-away perspective view of a linear actuator according to the invention. The linear actuator has an outer tubular member 10 and a member 12, the member 12 being partially linearly extendable from the tubular member relative to the tubular member and re-moveable into the tubular member. This movement is caused by an electric motor (not shown) which is able to rotate the threaded shaft 40 (see fig. 3 and 5) relative to the tubular member 10, the centre of gravity of the threaded shaft 40 being positioned relative to the tubular member 10, whereby the nut (Mutter) of the component 12 together with the whole component 12 is linearly movable relative to the tubular member 10, said nut being fixed in the circumferential direction relative to the tubular member 10 and the threaded shaft being screwed into said nut.
Furthermore, the linear actuator has a sensor unit 14, which is designed to measure a deformation characteristic parameter of the component 12. The sensor unit 14 is arranged at a radially outer region 16 of the component. The tubular member 42 of the component 12 includes the wall 18 of the component. The wall 18 has a recess (Ausnehmung) 26 formed as a through hole (Durchgangsloch) of the tubular member. The sensor unit 14 is arranged in the groove 26 and is located at the boundary (berandong) of the groove 26 along the circumference of the groove 26. The sensor unit 14 has a cylindrical shape, but can in principle also have other shapes. The recess 26 and the sensor unit 14 have a circular shape in view of the radial direction of the tubular member 42 looking towards the recess 26, whereby a simple and cost-effective manufacturability of the recess 26 and the sensor unit 14 is ensured.
The sensor unit 14 has a first strain gauge (de hnungsme beta streifen) 20, the longitudinal direction of the first strain gauge 20 being parallel to the longitudinal direction of the tubular member 42 and to the longitudinal direction 24 of the component 12. If the component 12 protrudes from the tubular member 10, a force exerted on the longitudinal direction 24 of the component 12 is achieved by an attachment (Aufsatz) 44, which is part of the component 12 and is fixed at the end of the tubular member 42. By this force, the tubular member 42 is deformed such that the groove 26 is also compressed in the longitudinal direction 24 and thereby causes the sensor unit 14 and the strain gage 20 to be compressed in the longitudinal direction 24. The measurement results of the sensor unit 14 are transmitted to an evaluation unit 22 of the linear actuator, which evaluation unit 22 is arranged outside the tubular member 10. Based on the measurement result, the evaluation unit calculates the magnitude of the force. In an alternative embodiment, the evaluation unit is arranged inside the tubular member 10. The strain gauge 20 also measures how much the groove 26 stretches in the longitudinal direction 24 when subjected to the force, which stretching is representative of the deformation characteristics of the component 12.
In the present embodiment, the sensor unit is a module having a sheet metal carrier to which three other strain gages are fixed in addition to the strain gage 20. The four strain gages are arranged in a full bridge fashion. In an alternative embodiment, the sensor unit 14 has only a single strain gage.
The component 12 also has three acceleration sensors that measure the accelerations of the component 12, which are oriented perpendicular to each other. In alternative embodiments, the component 12 has two or only one acceleration sensor. Further, the component 12 comprises a temperature sensor, which is arranged near the nut of the component 12.
Furthermore, the linear actuator comprises a component 32, which is designed to transmit data by means of electromagnetic radiation and which is designed to receive energy wirelessly and to subsequently supply an electrical load 34 with the wirelessly received energy on an electrical path. The electrical load 34 is the sensor unit 14. The component 32 itself is also supplied with electrical energy. Other associated sensor units or sensors are likewise energized by means of the component 32. The component 32 is designed as an NFC tag. The energy obtained by the component 32 is buffered by a capacitor for transmission to the electrical load 34. Because the component 32 is part of the component 12, the component 32, due to the mobility of the component 12 relative to the tubular 10, is sometimes disposed within the tubular 10.
Furthermore, the linear actuator has an electronic unit 36, which is designed to emit electromagnetic radiation in order to transmit information and energy to the inner space of the tubular element 10. This emission is achieved by an antenna 38 of the electronic unit arranged and fixed inside the tubular member 10 (see fig. 1 and 5). The antenna 38 is part of the NFC reading device of the electronic unit. The NFC tag and the NFC reading device are designed to be integrated with each other, respectively. To obtain energy, the NFC tag receives electromagnetic waves, which emanate from the NFC reader device, and converts it into energy.
In other embodiments, the NFC reader and NFC tag may be replaced by other similarly functioning components utilizing radio technology. Thus, the NFC standard is not critical to the functionality of the present invention and embodiments.
Furthermore, the electronic unit has a transmitting unit (not shown) which is designed for transmitting information by means of electromagnetic radiation to a receiver spaced from the linear actuator. By means of this transmitting unit, data from the sensor unit or sensor of the component 12 can be transmitted to the spaced-apart receiver after the data has been transmitted to the electronic unit by means of electromagnetic waves received by the antenna by means of the component 32. Alternatively or in addition to the evaluation unit 22, the receiver can have an evaluation unit for evaluating the data. Furthermore, the electronic unit can have a receiving unit which is designed to receive information by means of electromagnetic radiation from a transmitter spaced apart from the linear actuator. The spaced receivers and the spaced transmitters can be implemented in a single device. By means of a spaced-apart receiver or transmitter, it is possible for the electronic unit to send data to the cloud and, thus, for the linear actuator to be part of the internet of things. The cloud can store the transmitted data. Furthermore, the linear actuator can establish a connection with a smart device, in particular a smart phone, via a spaced-apart receiver or transmitter.
The evaluation unit 22 is designed as a calculation unit which is designed, by means of its software, to confirm the advice regarding the point in time of replacement of the mechanical component of the linear brake on the basis of data which are obtained by means of direct or indirect transmission from the sensor of the linear actuator by the calculation unit in at least one operating mode. Alternatively or additionally, the evaluation unit, which is spaced apart from the linear actuator, receives a confirmation of the suggestion of the replacement time.
Since the sensor unit 14 is arranged in the recess 26, the load range that can be measured by means of the sensor unit 14 depends on the size of the tubular member 42. The design of the tubular member 42 is selected accordingly, the desired load range can be sensed by means of the sensor unit 14 and the strain gauge 20. Of course, the resolution of the strain gage 20 is largely dependent upon the size of the tubular member 42 for force determination. By properly designing each tubular member 42, the same sensor unit 14 and the same strain gauge 20 can be used for different sized linear actuators according to the invention.
The strain gauge 20 can be vapor deposited directly on the substrate of the sensor unit 14. In alternative embodiments, the strain gage 20 can also be vapor deposited directly onto the component 12 or the tubular member 42. It is also conceivable in principle for the strain gage to be produced by thick film technology.
The data is transmitted to a receiver spaced from the linear actuator, which can be realized in particular by a radio standard, such as by the GSM standard or the bluetooth standard.
In an alternative embodiment of the invention, the electronic unit 36 is arranged inside the tubular member 10.
The electrical connection of the sensor unit and the power supply and evaluation of the sensor are achieved by flexible electrical conductors.
In an alternative embodiment, the sensor unit 14 is fixed to the radially outer surface of the tubular member 42 by two pins. The sensor unit 14 then measures the change in distance of the two pins.
List of reference numerals
10. Tubular member
12. Component part
14. Sensor unit
16. Outer region
18. Wall with a wall body
20. Strain gauge
22. Evaluation unit
24. Longitudinal direction
26. Groove
32. Component part
34. Load(s)
36. Unit cell
38. Antenna
40. Screw shaft
42. Tubular member
44. Attachment piece

Claims (7)

1. A linear actuator having a spindle unit, the spindle unit having:
the nut is a threaded nut which,
-a threaded shaft (40) for screwing in said nut, and
a component (32), wherein the component (32) is movable with the nut and is designed to transmit data by means of electromagnetic radiation and/or is designed to receive energy wirelessly and subsequently to power at least one sensor unit (14) on the spindle unit and/or at least one sensor located on the spindle unit with the wirelessly received energy on an electrical path,
wherein the linear actuator has at least one electronic unit (36) with an antenna (38), which antenna (38) is arranged inside the outer tubular member (10) opposite the component (32) and extends along the threaded axis (40), which electronic unit (36) is designed to receive electromagnetic radiation for transmitting information and/or to emit electromagnetic radiation for transmitting energy to the inner space of the outer tubular member (10) of the linear actuator.
2. The linear actuator of claim 1, wherein the component is disposed at least within the outer tubular member.
3. Linear actuator according to claim 1, wherein the electronic unit has NFC reading means.
4. A linear actuator according to claim 3, wherein the component has at least one NFC tag designed to be integrated with the NFC reading device.
5. Linear actuator according to claim 1, wherein the electronic unit has at least one transmitting unit designed for transmitting information by means of electromagnetic radiation to a receiver spaced from the linear actuator and/or at least one receiving unit designed for receiving information by means of electromagnetic radiation from a transmitter spaced from the linear actuator.
6. The linear actuator of claim 5, wherein the linear actuator is designed to store data to the cloud and/or is part of the internet of things.
7. Linear actuator according to claim 1, wherein the linear actuator has at least one calculation unit designed to confirm the advice regarding the point in time of replacement of a mechanical component of the linear actuator on the basis of data obtained by the calculation unit in at least one operating mode by means of direct or indirect transmission from a sensor of the linear actuator.
CN201910515310.XA 2018-06-15 2019-06-14 Component for a linear actuator Active CN110611376B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018209703.8 2018-06-15
DE102018209703.8A DE102018209703A1 (en) 2018-06-15 2018-06-15 Unit for a linear actuator

Publications (2)

Publication Number Publication Date
CN110611376A CN110611376A (en) 2019-12-24
CN110611376B true CN110611376B (en) 2023-12-15

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US (1) US10922502B2 (en)
CN (1) CN110611376B (en)
DE (1) DE102018209703A1 (en)

Citations (6)

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Publication number Priority date Publication date Assignee Title
JP2009171706A (en) * 2008-01-15 2009-07-30 Yamatake Corp Actuator
CN102638256A (en) * 2011-02-08 2012-08-15 施耐德电器工业公司 Wireless switching device
CN106120666A (en) * 2016-08-11 2016-11-16 安徽省农业科学院农业工程研究所 One automatically controls sluice
CN107086676A (en) * 2017-05-26 2017-08-22 青岛软控机电工程有限公司 A kind of wireless power and communication device
WO2018024506A1 (en) * 2016-08-01 2018-02-08 Philips Lighting Holding B.V. Adjustable luminaire and method using harvested nfc signals
CN108025431A (en) * 2015-09-14 2018-05-11 拓诺麦公司 Actuator diagnostics and prediction

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JP2005201390A (en) 2004-01-16 2005-07-28 Sumitomo Heavy Ind Ltd Forming machine and ball screw abrasion detecting method thereof
US7546211B2 (en) 2004-08-31 2009-06-09 Thk Co., Ltd. Condition detection apparatus, condition detection method, condition detection program, information recording medium therefor, and condition display apparatus, condition display method, condition display program, information recording medium therefor
US7298108B2 (en) 2004-11-29 2007-11-20 Smc Kabushiki Kaisha Control system for electric actuator
KR100736760B1 (en) 2006-03-29 2007-07-09 주식회사알에프윈도우 Forward and reverse link automatic power controlled repeater and method thereof
DE102010050837A1 (en) 2010-11-09 2012-05-10 Robert Bosch Gmbh Method for monitoring functional state of screw, involves stopping failure occurred in motor function, when slope of detected drive torque is lower than predetermined threshold value
US9504842B2 (en) * 2013-07-23 2016-11-29 Ado Holding Sa Electronic medical system with implantable medical device, having wireless power supply transfer
GB201505225D0 (en) * 2015-03-26 2015-05-13 Melexis Technologies Sa Wireless power transfer for sensing and actuating
EP3163715B1 (en) * 2015-10-29 2019-05-22 CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement System and method for remote powering at least one sensor or actuator from a rf power source
US20190017626A1 (en) * 2017-07-14 2019-01-17 Dresser, Llc Using short-range wireless connectivity to transmit data from a valve assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009171706A (en) * 2008-01-15 2009-07-30 Yamatake Corp Actuator
CN102638256A (en) * 2011-02-08 2012-08-15 施耐德电器工业公司 Wireless switching device
CN108025431A (en) * 2015-09-14 2018-05-11 拓诺麦公司 Actuator diagnostics and prediction
WO2018024506A1 (en) * 2016-08-01 2018-02-08 Philips Lighting Holding B.V. Adjustable luminaire and method using harvested nfc signals
CN106120666A (en) * 2016-08-11 2016-11-16 安徽省农业科学院农业工程研究所 One automatically controls sluice
CN107086676A (en) * 2017-05-26 2017-08-22 青岛软控机电工程有限公司 A kind of wireless power and communication device

Also Published As

Publication number Publication date
DE102018209703A1 (en) 2019-12-19
US20190384950A1 (en) 2019-12-19
US10922502B2 (en) 2021-02-16
CN110611376A (en) 2019-12-24

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